public void LoadData()
        {
            IsBusy = true;
            planManagerDomainContext = new PlanManagerDomainContext();
            ProductDomainContext = new ProductDomainContext();

            planManagerDomainContext.plan_extras.Clear();

            App app = Application.Current as App;
            LoadOperation<user_remind> loadOperationUserRemind =
               planManagerDomainContext.Load<user_remind>(planManagerDomainContext.GetUserRemindQuery(app.UserInfo.UserID));
            loadOperationUserRemind.Completed += LoadUseRemindComplete;
        }